Snake and Alphabet Puzzle

I loved these puzzles when I was a kid, so decided to make my own. They have been around since the 1880s. My first designs failed pretty bad as the tolerances were all wrong. I made it two sided to add to the challenge, but also, help those who wanted to start with something a bit easier. Angus over at Makers Muse also was inspired to design a puzzle based off the original puzzle15 design. Seeing his excellent channel recently on this subject was another reason for me to finish off this design.